Revert timeout back 2000ms instead of 1200000ms in TransportManager.j…

…ava (#210)

Recent  change to timeout be causing some SSH sessions, to timeout because of inactivity.

Commands that worked without issues in our enviroment previously but not anylonger:
sleep 120s
but it was working fine with:
asynchronousQueue.wait(2000);
but not with the new:
asynchronousQueue.wait(DEFAULT_WAIT_TIMEOUT); //1200000ms

Notice the even the comment was left: /* After the queue is empty for about 2 seconds, stop this thread */
I think it was a mistake to change this specific wait() with to a different timeout.
as the pullrequest seems to want to introduce a default timeout to the wait() with infinite timeouts. 


15622af#diff-fbe5f13c040cb16dee69517cb436e446fa38cfb3262e690cc711f52a32edda75R92

src/com/trilead/ssh2/transport/TransportManager.java

@@ -90,7 +90,7 @@ public void run()
 
 						try
 						{
-							asynchronousQueue.wait(DEFAULT_WAIT_TIMEOUT);
+							asynchronousQueue.wait(2000);
 						}
 						catch (InterruptedException e)
 						{